CN107343809B - A kind of skull drilling device of neurosurgery - Google Patents
A kind of skull drilling device of neurosurgery Download PDFInfo
- Publication number
- CN107343809B CN107343809B CN201710760457.6A CN201710760457A CN107343809B CN 107343809 B CN107343809 B CN 107343809B CN 201710760457 A CN201710760457 A CN 201710760457A CN 107343809 B CN107343809 B CN 107343809B
- Authority
- CN
- China
- Prior art keywords
- rack gear
- gear
- driving gear
- output shaft
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1695—Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Neurosurgery (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to a kind of skull drilling devices of neurosurgery, it is characterized by comprising shells, handle, output shaft, transmission device, first driving gear, power rack gear, the handle is located at one end of shell, output shaft assembles inside the shell, the front end of output shaft is equipped with drill bit fixing card, a drill bit is equipped in drill bit fixing card, the output shaft is equipped with passive umbrella wheel, passive umbrella wheel and active umbrella wheel are intermeshed, active umbrella wheel is mechanically coupled together by transmission device and the first driving gear, first driving gear is fixed in handle by the first fixing axle, first driving gear is assemblied in the long stripes through hole in power rack gear, the two sides of through-hole are symmetrically arranged with left rack gear, right rack gear, the invention has the benefit that positioning measurement bar can position, and operator can be allowed intuitively to find out and pierce depth, be conducive to mention The success rate of height operation can be improved the stability of operation while effectively improving bit rotation velocity.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of skull drilling device of neurosurgery.
Background technique
It is very sad in neurosurgery clinical position, for Clinics and Practices, skull drilling device is often used, for boring cranium hand
Art bores cranium operation and often drill bit alignment patient's head drills, present brill cranium operation be according to previous experiences into
Row opens cranium, is unable to estimate the depth pierced, cannot grasp the time for stopping boring.And manually skull drilling device is rocker-type now, is needed
Two hands are wanted to be operated, stability is not high.
Summary of the invention
To overcome the deficiency, the purpose of the present invention is to provide a kind of skull drilling device of neurosurgery, Neng Gouding
Position, can intuitively find out and pierce depth, judge rundown time, stability is higher.
The technical solution adopted by the present invention to solve the technical problems is: a kind of skull drilling device of neurosurgery, packet
Shell, handle, output shaft, transmission device, the first driving gear, power rack gear are included, the handle is located at one end of shell, output
Axis assembles inside the shell, and the front end of output shaft is exposed from one end far from handle, and the front end of output shaft is equipped with drill bit fixing card, bores
A drill bit is equipped in head fixing card, the output shaft is equipped with passive umbrella wheel, and passive umbrella wheel and active umbrella wheel are intermeshed,
The active umbrella wheel is fixed on handle inner by third fixing axle, and active umbrella wheel passes through transmission device and the first driving tooth turbine
Tool links together, and first driving gear is fixed in handle by the first fixing axle, and the first driving gear is assemblied in dynamic
In long stripes through hole in power rack gear, the two sides of through-hole are symmetrically arranged with left rack gear, right rack gear, on the left rack gear and right rack gear
Even to be equipped with pawl, the pawl tooth top of the left rack gear and right rack gear is moved towards on the contrary, power rack gear outer end face is equipped with pressing plate
The inner face of power rack gear is fixedly connected with one end of first back-moving spring, and the power rack gear is located in limit chamber, and first resets
The other end of spring is fixed on the bottom of limit chamber.
Specifically, the two sides of the power rack gear are equipped with pulley, and pulley is located in the limiting slot of limit chamber two sides.
Specifically, the first buffer spring is equipped between the pulley and power rack gear.
Specifically, the pawl is equipped with pressure face, guide surface, supporting surface, the base surface of guide surface and left rack gear, right rack gear
15-35 ° of angle, 45-90 ° of angle of base surface of supporting surface and left rack gear, right rack gear.
Specifically, the transmission device includes the first driven gear, the second driving gear, the second driven gear, third master
Moving gear, the first driven gear are fixed in the first fixing axle, and the first driven gear meshes together with the second driving gear, the
Two driving gears are fixed on handle inner by the second fixing axle, and the second driven gear is fixed in the second fixing axle, follow
Two driving gears rotate together, and the second driven gear and third driving gear mesh together or by chain and third master
Moving gear connection, third driving gear are fixed in third fixing axle, and the outer diameter of the first driven gear is greater than the first driving gear
Outer diameter, the outer diameter of the second driving gear less than the first driven gear outer diameter, the outer diameter of the second driving gear less than second from
The outer diameter of moving gear, the outer diameter of the second driven gear are greater than the outer diameter of third driving gear.
Specifically, the drill bit fixing card is equipped with directed cavity, is equipped with a measurement and positioning bar, measurement and positioning in directed cavity
The front end of bar is exposed, and buffer spring is cased with outside rear end, and buffer spring is fixed in directed cavity, and measurement and positioning bar is externally provided with quarter
Degree.
Specifically, the front end of the measurement and positioning bar is equipped with multi-directional ball.
The invention has the following advantages: positioning measurement bar can position, and operator can be allowed intuitively to find out and pierce depth
Degree facilitates judgement and stops the time bored, slows down penetration rate after depth reaches a certain level, and is conducive to the success for improving operation
Rate, a hand can operate, and while effectively improving bit rotation velocity, can be improved the stability of operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one.
Fig. 2 is the power rack gear of the embodiment of the present invention one and the structural schematic diagram of the first driving gear position.
Fig. 3 is the A-A of the embodiment of the present invention one to structural schematic diagram.
Fig. 4 is the enlarged diagram that power rack gear of the present invention and the first driving gear engage.
Fig. 5 is the structural schematic diagram of the right rack gear upper inverted tooth of the present invention.
Fig. 6 is the structural schematic diagram of the measurement and positioning device of the embodiment of the present invention two.
1 shell in figure, 11 handles, 12 limit chambers, 13 limiting slots, 2 output shafts, 21 driven umbrella wheels, 3 drill bit fixing cards, 31
Measurement and positioning bar, 32 second buffer springs, 33 multi-directional balls, 4 drill bits, 5 active umbrella wheels, 51 third fixing axles, 52 third driving tooths
Wheel, 53 chains, 61 second driving gears, 6 second driven gears, 7 first driving gears, 71 first driven gears, 72 first turns
Axis, 8 power rack gears, 81 first back-moving springs, 82 left rack gears, 83 right rack gears, 84 pulleys, 85 first buffer springs, 86 pressings
Plate, 9 second back-moving springs, A guide surface, B pressure face, C supporting surface, D base surface.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.
Embodiment one
A kind of skull drilling device of neurosurgery as shown in Figures 1 to 5, including shell 1, handle 11, output shaft 2,
Transmission device, the first driving gear 7, power rack gear 8, the handle 11 are located at one end of shell 1, form a clamp with shell 1
Angle, output shaft 2 are assemblied in shell 1, bearing 21 are equipped between output shaft 2 and shell 1, the front end of output shaft 2 is from far from handle 1
One end expose, the front end of output shaft 2 is equipped with drill bit fixing card 3, is equipped with a drill bit 4, the output in drill bit fixing card 3
Axis 2 is equipped with passive umbrella wheel 22, and passive umbrella wheel 22 is intermeshed with active umbrella wheel 5, and the active umbrella wheel 5 passes through third fixing axle
51 are fixed on inside handle 11, and active umbrella wheel 5 is mechanically coupled together by transmission device and the first driving gear 7, and described the
One driving gear 7 is fixed in handle 11 by the first fixing axle 72, and the first driving gear 7 is assemblied in the length in power rack gear 8
In strip through-hole, the two sides of through-hole are symmetrically arranged with left rack gear 82, right rack gear 83, left rack gear 82, right rack gear 83 and the first driving tooth
7 engagement connection of wheel, is uniformly provided with pawl 87 on the left rack gear 82 and right rack gear 83, and the left rack gear 82 and right rack gear 83 fall
For 87 tooth top of tooth towards on the contrary, 8 outer end face of power rack gear is equipped with pressing plate 86, the inner face of power rack gear 8 and first reset bullet
One end of spring 81 is fixedly connected, and the power rack gear 8 is located in limit chamber, and the other end of first back-moving spring 81 is fixed on limit
The bottom of position chamber 12.
Specifically, the two sides of the power rack gear 8 are equipped with pulley 84, and pulley 84 is located at the limiting slot of 12 two sides of limit chamber
In 13.
Specifically, the first buffer spring 85 is equipped between the pulley 84 and power rack gear 8.
Specifically, the pawl 87 is equipped with pressure face B, guide surface A, supporting surface C, guide surface A and left rack gear 82, right rack gear
15-35 ° of angle of 83 base surface D, 45-90 ° of angle of base surface D of supporting surface C and left rack gear 82, right rack gear 83, pressure
The angle of face B is determined by the tooth of the first driving gear 7, when pawl 87 acts on the first driving gear 7, pressure face B and
The pressure face of tooth just fits together on one driving gear 7, and supporting surface C and pressure face B intersection are set as circular arc chamfering, is oriented to
Face A and pressure face B intersection are set as circular arc chamfering.
As shown in figure 5, the pawl 87 of right rack gear 82 is towards inside, the pawl 87 of left rack gear 83 is towards outside, when by pressing
When power rack gear 8, hand slightly pins pressing plate 86 and exerts oneself to the left, and right rack gear 83 is made to be close to the first driving gear 7, left rack gear 82
The first driving gear 7 is departed slightly from, the 87 pressure face B of pawl on rack gear 83 right in this way is acted on the tooth of the first driving gear 7
Pressure face, the guide surface A of left rack gear 82 can make 7 smooth rotation of the first driving gear, not will cause brake condition, this process
Middle right rack gear 83 plays active role, drives the rotation of the first driving gear 7, and the first driving gear 7 is driven by transmission device and led
Dynamic umbrella wheel 5 rotates, and active umbrella wheel 5 drives driven umbrella wheel 22, and driven umbrella wheel 22 drives output shaft 2, and then drill bit 4 is driven to carry out
Bore cranium；
When being pressed into bottom, under the action of first back-moving spring 81, power rack gear 8 is popped up, and hand presses pressing plate
86 exert oneself slightly towards right side, and left rack gear 82 is made to be close to the first driving gear 7, and at this moment left 82 pawl of rack gear, 87 pressure face acts on the
Pressure face on the tooth of one driving gear 7, one when guaranteeing the direction of the first driving gear 7 rotation and pressing inward against power rack gear
Sample not will cause and rotate backward.
Specifically, the transmission device includes the first driven gear 71, the second driving gear 61, the second driven gear 6, the
Three driving gears 52, the first driven gear 71 are fixed in the first fixing axle 72, and the first driving gear 7 is followed to rotate together, the
One driven gear 71 meshes together with the second driving gear 61, and the second driving gear 61 is fixed on handle by the second fixing axle
Inside 11, the second driven gear 6 is fixed in the second fixing axle, follows the second driving gear 61 to rotate together, the second driven tooth
Wheel 6 meshes together with third driving gear 52 or is connect by chain 53 with third driving gear 52, completes transmission, the
Three driving gears 52 are fixed in third fixing axle 51, and the outer diameter of the first driven gear 71 is greater than the outer of the first driving gear 7
Diameter, the outer diameter of the second driving gear 61 is less than the outer diameter of the first driven gear 71, and the outer diameter of the second driving gear 61 is less than second
The outer diameter of driven gear 6, the outer diameter of the second driven gear 6 are greater than the outer diameter of third driving gear 52, are converted by Pyatyi, increased
Add the revolving speed of output shaft 22.
Embodiment two
As shown in fig. 6, on the basis of example 1, the drill bit fixing card 3 is equipped with directed cavity, it is equipped in directed cavity
One measurement and positioning bar 31, the front end of measurement and positioning bar 1 are exposed, and buffer spring 32 is cased with outside rear end, and buffer spring 32 is solid
It is scheduled in directed cavity, measurement and positioning bar 31 is externally provided with scale, and when being drilled, patient's cranium is close in the front end of measurement and positioning bar 31
Bone lateral surface plays positioning action, while with the drilling of drill bit 4, is forced under power effect outside, measurement and positioning bar 31 is pressed into
Inside directed cavity, operator can observe and measure the scale in locating rod 31, judge the distance that drill bit 4 enters.
Specifically, the front end of the measurement and positioning bar 31 is equipped with multi-directional ball 33, and rotation is facilitated to move, and protects patient's head
Bone.
The present invention is not limited to the embodiment, anyone should learn that the structure made under the inspiration of the present invention becomes
Change, the technical schemes that are same or similar to the present invention are fallen within the scope of protection of the present invention.
Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (6)
1. a kind of skull drilling device of neurosurgery, it is characterised in that: including shell, handle, output shaft, transmission device,
One driving gear, power rack gear, the handle are located at one end of shell, and output shaft assembles inside the shell, the front end of output shaft from
One end far from handle is exposed, and the front end of output shaft is equipped with drill bit fixing card, is equipped with a drill bit in drill bit fixing card, described
Output shaft is equipped with passive umbrella wheel, and passive umbrella wheel and active umbrella wheel are intermeshed, and the active umbrella wheel is solid by third fixing axle
It is scheduled on handle inner, active umbrella wheel is mechanically coupled together by transmission device and the first driving gear, first driving tooth
Wheel is fixed in handle by the first fixing axle, and the first driving gear is assemblied in the long stripes through hole in power rack gear, through-hole
Two sides be symmetrically arranged with left rack gear, right rack gear, pawl, the left rack gear and right tooth are uniformly provided on the left rack gear and right rack gear
For the pawl tooth top of item towards on the contrary, power rack gear outer end face is equipped with pressing plate, the inner face of power rack gear and first reset bullet
One end of spring is fixedly connected, and the power rack gear is located in limit chamber, and the other end of first back-moving spring is fixed on limit chamber
Bottom；The drill bit fixing card is equipped with directed cavity, and a measurement and positioning bar is equipped in directed cavity, and the front end of measurement and positioning bar is revealed
Outside, buffer spring is cased with outside rear end, buffer spring is fixed in directed cavity, and measurement and positioning bar is externally provided with scale.
2. a kind of skull drilling device of neurosurgery according to claim 1, it is characterised in that: the power rack gear
Two sides are equipped with pulley, and pulley is located in the limiting slot of limit chamber two sides.
3. a kind of skull drilling device of neurosurgery according to claim 2, it is characterised in that: the pulley and power
The first buffer spring is equipped between rack gear.
4. a kind of skull drilling device of neurosurgery according to claim 1, it is characterised in that: the pawl is equipped with pressure
Power face, guide surface, supporting surface, 15-35 ° of angle of base surface of guide surface and left rack gear, right rack gear, supporting surface and left rack gear,
45-90 ° of the angle of the base surface of right rack gear.
5. a kind of skull drilling device of neurosurgery according to claim 1, it is characterised in that: the transmission device packet
The first driven gear, the second driving gear, the second driven gear, third driving gear are included, the first driven gear is fixed on first
In fixing axle, the first driven gear meshes together with the second driving gear, and the second driving gear is fixed by the second fixing axle
In handle inner, the second driven gear is fixed in the second fixing axle, follows the second driving gear to rotate together, the second driven tooth
Wheel meshes together with third driving gear or is connect by chain with third driving gear, and third driving gear is fixed on
In third fixing axle.
6. a kind of skull drilling device of neurosurgery according to claim 1, it is characterised in that: the measurement and positioning bar
Front end be equipped with multi-directional ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760457.6A CN107343809B (en) | 2017-08-30 | 2017-08-30 | A kind of skull drilling device of neurosurgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760457.6A CN107343809B (en) | 2017-08-30 | 2017-08-30 | A kind of skull drilling device of neurosurgery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107343809A CN107343809A (en) | 2017-11-14 |
| CN107343809B true CN107343809B (en) | 2019-10-18 |
Family
ID=60256877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710760457.6A Expired - Fee Related CN107343809B (en) | 2017-08-30 | 2017-08-30 | A kind of skull drilling device of neurosurgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107343809B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893206A (en) * | 2019-04-17 | 2019-06-18 | 遵义市红花岗区人民医院 | A kind of neurosurgery drilling equipment |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717204A (en) * | 2002-11-27 | 2006-01-04 | 安斯波成就公司 | Powered kerrison-like rongeur system |
| CN201775653U (en) * | 2010-09-03 | 2011-03-30 | 威海鸿宇医疗器械有限公司 | Orienting electric skull drill |
| CN103006290A (en) * | 2013-01-12 | 2013-04-03 | 青岛理工大学 | Axial force controllable surgical bone drill with stepped bit |
| CN203153861U (en) * | 2013-04-21 | 2013-08-28 | 朱亮洪 | Medical bone drill |
| CN103406569A (en) * | 2013-07-14 | 2013-11-27 | 苏州萃智新技术开发有限公司 | Manual tapper |
| CN103750879A (en) * | 2013-11-28 | 2014-04-30 | 张秀华 | Skull drilling device for use in neurosurgery operation |
| WO2015006296A1 (en) * | 2013-07-09 | 2015-01-15 | Stryker Corporation | Surgical drill having brake that, upon the drill bit penetrating through bone, prevents further insertion of the drill bit |
| CN104939892A (en) * | 2015-06-29 | 2015-09-30 | 河南曙光健士医疗器械集团股份有限公司 | Medical brain drill |
| CN205054343U (en) * | 2015-10-11 | 2016-03-02 | 刁新峰 | Electric cranial drill for neurosurgery |
| WO2017083989A1 (en) * | 2015-11-16 | 2017-05-26 | Ao Technology Ag | Surgical power drill including a measuring unit suitable for bone screw length determination |
| CN106725710A (en) * | 2016-11-28 | 2017-05-31 | 中国人民解放军第四军医大学 | Medical drilling device |
| CN106725719A (en) * | 2017-01-17 | 2017-05-31 | 吴延平 | A kind of spacing orthopaedics drilling equipment with vibration damping protective action |
| CN206342521U (en) * | 2016-10-27 | 2017-07-21 | 廉江市人民医院 | A kind of neurosurgery is convenient for changing the skull drilling device of drill bit |
| CN106983535A (en) * | 2017-05-10 | 2017-07-28 | 刘敏 | A kind of new safe cranial drill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341465C (en) * | 2005-08-29 | 2007-10-10 | 张庆林 | Mirco-traumatic skull drill |
-
2017
- 2017-08-30 CN CN201710760457.6A patent/CN107343809B/en not_active Expired - Fee Related
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717204A (en) * | 2002-11-27 | 2006-01-04 | 安斯波成就公司 | Powered kerrison-like rongeur system |
| CN201775653U (en) * | 2010-09-03 | 2011-03-30 | 威海鸿宇医疗器械有限公司 | Orienting electric skull drill |
| CN103006290A (en) * | 2013-01-12 | 2013-04-03 | 青岛理工大学 | Axial force controllable surgical bone drill with stepped bit |
| CN203153861U (en) * | 2013-04-21 | 2013-08-28 | 朱亮洪 | Medical bone drill |
| WO2015006296A1 (en) * | 2013-07-09 | 2015-01-15 | Stryker Corporation | Surgical drill having brake that, upon the drill bit penetrating through bone, prevents further insertion of the drill bit |
| CN103406569A (en) * | 2013-07-14 | 2013-11-27 | 苏州萃智新技术开发有限公司 | Manual tapper |
| CN103750879A (en) * | 2013-11-28 | 2014-04-30 | 张秀华 | Skull drilling device for use in neurosurgery operation |
| CN104939892A (en) * | 2015-06-29 | 2015-09-30 | 河南曙光健士医疗器械集团股份有限公司 | Medical brain drill |
| CN205054343U (en) * | 2015-10-11 | 2016-03-02 | 刁新峰 | Electric cranial drill for neurosurgery |
| WO2017083989A1 (en) * | 2015-11-16 | 2017-05-26 | Ao Technology Ag | Surgical power drill including a measuring unit suitable for bone screw length determination |
| CN206342521U (en) * | 2016-10-27 | 2017-07-21 | 廉江市人民医院 | A kind of neurosurgery is convenient for changing the skull drilling device of drill bit |
| CN106725710A (en) * | 2016-11-28 | 2017-05-31 | 中国人民解放军第四军医大学 | Medical drilling device |
| CN106725719A (en) * | 2017-01-17 | 2017-05-31 | 吴延平 | A kind of spacing orthopaedics drilling equipment with vibration damping protective action |
| CN106983535A (en) * | 2017-05-10 | 2017-07-28 | 刘敏 | A kind of new safe cranial drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107343809A (en) | 2017-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107127832A (en) | A kind of continuous wooden plate punching machine | |
| ATE530276T1 (en) | DRILLING TOOL WITH DUST COLLECTOR | |
| CN107343809B (en) | A kind of skull drilling device of neurosurgery | |
| CN103750879B (en) | A kind of brill cranium device of neurosurgery | |
| CN204562084U (en) | A kind of spatula | |
| CN108687967A (en) | A kind of hand-held drilling machine for building construction | |
| CN213116143U (en) | Quick drilling device for resource exploration | |
| CN201414823Y (en) | Handle-type automatic skull drilling instrument | |
| CN103637832A (en) | Hole puncher for orthopedics department | |
| CN204542032U (en) | A kind of department of stomatology diagnosis and treatment pressure tongue device | |
| CN203153861U (en) | Medical bone drill | |
| CN206567569U (en) | A kind of Digit Control Machine Tool smooth mobile device of rig | |
| CN107775106A (en) | A kind of saw easy to use | |
| CN208289033U (en) | A kind of Novel self-centering device for beating internal point for roll | |
| CN208836696U (en) | A kind of mushroom inoculation puncher with flexible drilling function | |
| CN109893206A (en) | A kind of neurosurgery drilling equipment | |
| CN108716363A (en) | A kind of impact rotating pipe-following drilling tool brill | |
| CN102078215B (en) | Special bolt driver for bone screw | |
| CN205110510U (en) | Special manual pliers that punches of light gauge steel | |
| CN207972073U (en) | Wooden toy disk center high-speed boring machine | |
| CN107440859A (en) | A kind of care bed for accelerating rehabilitation | |
| CN211347489U (en) | Soil sampling device for ecological environment monitoring | |
| CN207152623U (en) | With the bone drill for penetrating indicator function | |
| CN203865126U (en) | Beer imprinting and labeling mechanism | |
| CN208079770U (en) | A kind of portable test tube potato dibbler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20200830 |